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What types of welding do you need to/want to do? It's not a bad price if you have a suitcase wire feeder already. Look at the face plate to see all the available functions are what you have on your wish list. It's not a good deal if you don't get everything you want at any price.

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I need to keep up my certs for 2 inch 6g carbon and stainless in case they go out during dry spells in work. Other than that it will mostly be used for personal projects. I wouldn't mind having something that I could do aluminum but not sure how much more a machine like that would cost.

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Even though thats an odd ball 350 vs, assuming it not stolen(be sure that model walks off many sites). 1100 for a inverter xmt 350 which will still run any feeder with a contactor is a good price. Be warned, if the case is beat up, it is very possible that welder lived a very hard life, I suggest popping the case off and looking at the internals for corrision.
Kevin

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Even though thats an odd ball 350 vs, assuming it not stolen(be sure that model walks off many sites). 1100 for a inverter xmt 350 which will still run any feeder with a contactor is a good price. Be warned, if the case is beat up, it is very possible that welder lived a very hard life, I suggest popping the case off and looking at the internals for corrision.
Kevin

The case looks to be in great shape. And the guy's small little shop is spotless looking. I think he is moving on to a more versatile welder. I'll probably buy it if everything checks out and maybe later do the same thing. I eventually want to be able to weld aluminum even if it's only for my home projects.

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I've also got a broken xmt 304 with 2 bad boards (213664 and 219820d). This was going to be a replacement. I'd like to have both machines (working of course) but the boards were listed as unrepairable and the upgraded cards that they need (240570 and 240500) are more than I paid for it. But it would be nice to have basically an equivalent machine as a replacement .

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There are no error codes..I took it to a supposed certified Miller weld repair shop... they told me the 2 boards were bad. When I plug it in , everything appears to work. Just no output.
I have an IGBT tester and all of them checked out.? I also have a bench power supply and physically input power to the IGBT's and SR1 individually and everything checked out there as well. I also have a couple of capacitor checkers and both the big blue capacitors checked out as well. I tested the diodes and the resistors on the little board attached to the IGBT's(desoldering them) and all checked out. I checked the main switch for continuity and good contact along with loosening and cleaning and re-tightening any grounds or cables I could find...no dice. I just don't know enough to find the problem but I think I have the equipment(with the exception of an IC tester) to test and replace anything on the boards. I'm willing to try anything because it's just an "electronic spare parts for a robot" in its current state.

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The control board usually gives a Help 6, the output board usually a help7, sometimes the control transformers to run the igbts blow which will also give you a help 7. But you blow a IGBT transformer, you also take out a igbt. Never the less, shoot me the serial# and I can pretty much tell you which Zener is blown.